<div class="main-menu">
    <?php
    wp_nav_menu(array(
        'theme_location' => 'main-menu',
        'container' => false,
        'container_class' => false,
        'menu_class' => '',
        'container_id' => '',
        'before' => '',
        'after' => '',
        'items_wrap' => '%3$s',
        'fallback_cb' => 'wp_page_menu'
    ));
    ?>
</div>
